If I do one a 1 year lease, it will end during winter time (freezing and snow) so I thought I can offer a 9 month so that it will always end during a spring or fall time.

Snow, freeze and rain all can have a huge impact on rehabbing, depending on the scope of work.

Most taxing jurisdictions place a freeze ceiling on the tax amount to help prevent seniors from losing their homes.

So you'll want to make sure vacant homes are winterized to avoid freezing pipes.

Adapt, don't freeze.

Extreme weather conditions, or areas prone to flooding, high wind, tornados, heavy snow storms, high humidity, wildfires, and long stretches of freezing temps add up to more maintenance costs, unplanned repair expenses, more insurance claims and higher premiums, greater risk of injury, higher utility costs, snow removal, and more strain on mechanical equipment, roofs, siding, and so on.

People are freezing. 

This is in the terms: The tenant agrees to pay for any damage to plumbing caused by freezing or any neglect.

I believe that the most recent one was flood damage due to freezing pipes. 

Flushing a nearby toilet would cause a woosh of air in the pipe and create a smell.The solution was to pour 2 cups of marine (rv) anti freeze and a bit of water down that drain to fill it with something that won’t evaporate.